MAX25614A
MAX25614A
PRODUCTIONAutomotive IR LED/VCSEL Driver for Driver Monitoring Systems
ASIL-B, Automotive Infrared LED/VCSEL Driver Simplifies Design for Automotive Driver and Occupant Monitoring Systems
- Part Models
- 2
- 1ku List Price
- Starting From $5.24
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Overview
- Integration Minimizes BOM and PCB Area
- Integrated Switching nFET
- Integrated pFET with Inrush Current Limit
- I2C Programming Controls
- Comprehensive Fault Protection Including Eye Safety
- LED Current Monitoring, Overcurrent Protection
- LED Short-to-Ground/Battery Protection
- LED Open Protection
- Boost Under/Overvoltage Protection
- Thermal Warning and Shutdown
- EMI Mitigation
- Spread-Spectrum Frequency Modulation
- Programmable LED Current Slew Rate
- Automotive Ready
- -40°C to +125°C Operating Temperature Range
- AEC-Q100 Grade 1 and ASIL B Compliant
The MAX25614 is a high-current IR LED/VCSEL driver for automotive driver monitoring systems (DMS). This IC can drive IR LED/VCSEL strings of up to 35V from a 4.5V to 36V input supply. The MAX25614 can drive up to 10A peak current to the IR emitter. It is designed for applications where the IR emitter is pulsed on and off, typically at 60Hz or the shutter speed of the corresponding image sensor. The MAX25614 uses fixed-frequency, average current-mode control with programmable switching frequency options of 420kHz, 1MHz, 1.6MHz, and 2.1MHz. Both an inrush current-limiting pFET and a low-side switching nFET are integrated.
The MAX25614 incorporates an I2C serial interface for communication with an external microcontroller. I2C programming options include: LED current amplitude, LED current slew rate, boost converter output voltage, boost converter input current, switching frequency, maximum LED current, and maximum LED on-time. Additionally, the MAX25614 provides fault and diagnostic information through the I2C interface. Analog-controlled variants are available as well, and are described in the MAX25614C/MAX25614D data sheet.
A dedicated current-monitoring circuit is integrated to provide LED current information to the microcontroller. The MAX25614 has an open-drain fault output that asserts low in case of open LED, LED overcurrent, excessive LED on-time, LEDN short to battery, boost UV/OV, inrush current-limiting pFET timeout, or thermal warning/shutdown. The MAX25614 is available in a 28-pin, side-wettable TQFN package with exposed pad and is specified for operation over the -40°C to +125°C automotive temperature range.
Applications
- Automotive Driver Monitoring System (DMS)
- Automotive Occupant Monitoring System (OMS)
- Night Vision
- Optical Inspection/Machine Vision
Documentation
Data Sheet 1
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Complete documentation is available upon completion of a Non-Disclosure Agreement (NDA).
Request an NDAADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| MAX25614AATI/VY+ | 28-Lead Side Wettable TQFN (5mm x 5mm x 0.75mm) | ||
| MAX25614AATI/VY+T | 28-Lead Side Wettable TQFN (5mm x 5mm x 0.75mm) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Apr 26, 2022 - 2274 WAFER FAB |
||
| MAX25614AATI/VY+ | PRODUCTION | |
| MAX25614AATI/VY+T | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Request a Driver/SoftwareEvaluation Kits
Evaluation Kit for the MAX25614A/MAX25614B/MAX25614C/MAX25614D
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